rust-lang / rust-lang/rust-clippy
duplicate variables
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A-lint
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- Rust
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Description
Lint multiple variables having the same value. One should be using a single variable.
see https://github.com/rust-lang/rust/pull/47150/files for an example where this is a bug.
Should not lint if the mutability differs or if there were mutations between the assignments
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Review the linked Rust pull request for the duplicate-variable example and use it to understand the intended lint behavior. The work is done when repeated assignments with the same value are linted, while differing mutability or intervening mutations suppress the lint.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100